Choosing pc power supplies & cables comes down to more than picking the largest wattage printed on a box. A small-form-factor build may call for an SFX unit, while a parts list focused on ATX 3.0 or PCIe 5.0 points in a different direction. Cable layout and condition also separate these four options. The useful move is to start with the specifications your build actually calls for, then narrow the field by the connections or layout you want.
Quick take
The two SilverStone units share the lowest listed price, while the EVGA sits $5 higher and the GAMEMAX creates a $54.99 span from the low end to the high end. That makes this a choice between distinct named configurations rather than a like-for-like set.
The SilverStone SST-ST30SF is the 300W SFX route, and the SST-ST45SF is the 450W SFX route. EVGA adds a fully modular layout for shoppers planning cable management. GAMEMAX is the entry carrying ATX 3.0, PCIe 5.0, ARGB, and a 1050W designation. Condition ranges from open box and used to new, so that should be part of the decision rather than an afterthought.
Listed-price comparison
| Model | Listed price | Price position |
|---|---|---|
| SilverStone SST-ST30SF 300W | USD 65.00 | |
| Silver Stone SST-ST45SF 450W | USD 65.00 | |
| EVGA SuperNOVA 450 GM | USD 70.00 | |
| GAMEMAX 1050W ATX 3.0 | USD 119.99 |
Decision matrix
- Choose the SilverStone SST-ST30SF when your build calls for an SFX power supply with a listed 300W maximum output.
- Choose the Silver Stone SST-ST45SF when 450W and an SFX designation are the specifications you are targeting.
- Choose the EVGA SuperNOVA 450 GM when you want an SFX unit listed as new and would rather select from its modular cable connections.
- Choose the GAMEMAX 1050W when ATX 3.0 and a 1050W designation are on your required-spec list.
Product notes
SilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power Supply
The SST-ST30SF is a focused match for a build that needs the listed 20-pin, 20+4-pin, 24-pin, and 8-pin 12V connections in an SFX format. Its single-fan cooling setup and black finish keep the description straightforward, while the 80Plus Bronze designation helps identify it against the Gold-labelled alternatives here. This is the one to choose when the named 300W SFX configuration and those connector types align with the parts already selected. Its limitation is condition: it is marked open box, unlike the new-condition EVGA and GAMEMAX units.
Silver Stone SST-ST45SF 450W SFX 80 Plus Bronze Power Supply
The SST-ST45SF offers a direct route for shoppers seeking an SFX power supply with a 450W nameplate and an 80 Plus Bronze label. It also shares the low end of the listed price range with the 300W SilverStone, which makes the choice between those two especially dependent on the output named in the title. Pick it when 450W is the target and a used component fits the plan. The clear limitation is that it is listed as used, with prior-use scratches described, rather than new or open box condition.
EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply. New
Cable planning is the reason to look closely at the EVGA SuperNOVA 450 GM. It is explicitly fully modular and names 24-pin, 4+4 CPU, 6+2-pin PCI Express, SATA, and 4-pin peripheral connections, giving a shopper concrete cable categories to work from. ECO Mode with a DBB fan is also part of its description. Choose this model when modular cable management matters more than simply matching the lowest listed price. The limitation is its 450W designation: it does not meet a shopping list specifically calling for the GAMEMAX 1050W model.
GAMEMAX 1050W ATX 3.0 PCIE 5.0 ARGB Smart 80+ Gold Power Supply UNIT (PSU) WHITE
The GAMEMAX is the distinct choice for a build specifically seeking ATX 3.0 and PCIe 5.0 wording, alongside an ARGB design and 80+ Gold label. Its title also identifies a 1050W model, setting it apart from the three lower-wattage named options. Choose it when those exact platform and appearance terms belong on your requirements list, rather than when you are simply choosing among SFX models. The listed white color is its practical limitation for shoppers aiming for a black PSU appearance; its stated finish makes it a less direct match for that particular look.
Final recommendation by use case
For a 300W SFX build needing 20+4-pin and 8-pin 12V connections, choose the SilverStone SST-ST30SF. For a used-condition SFX route centered on a 450W target, the Silver Stone SST-ST45SF fits that brief. Pick the EVGA SuperNOVA 450 GM when fully modular cabling is the priority. Choose the GAMEMAX 1050W when ATX 3.0, PCIe 5.0, and ARGB are the terms driving your build plan.
